Partner 23 - UCam
Centre for Atmospheric Science, University of Cambridge
Expertise and experience of the organization
The Centre for Atmospheric Science (CAS) at the University
of Cambridge pursues fundamental research into the chemical and physical
processes controlling the structure and composition of the Earth's atmosphere.
The research programme comprises laboratory studies, field measurements,
modelling and theoretical analysis, and a major strength of CAS is in the
strong interactions between these various disciplines. Researchers at the
Centre for Atmospheric Science have been actively developing and applying
a range of chemistry-transport models and chemistry-climate models to numerical
studies of the troposphere and stratosphere for more than 20 years, and have
particular expertise in the areas of tropospheric oxidation processes, long-range
transport, stratosphere-troposphere coupling, chemistry-climate feedbacks,
stratospheric ozone hole development and recovery, and evaluation of models
against atmospheric measurements. CAS has been a major contributor to national,
European and international research projects, recently including ACTO, EXPORT,
ITOP, MOZAIC, POET, RETRO, THALOZ, TRADEOFF, ACCENT, HTAP, AMMA, ACTIVE and
Role and contribution
The principal contribution will be application of a
high resolution (40-60 km) global chemistry-climate model (a nudged version
of the UK Met Office Unified Model together with the recently-developed UKCA
chemistry-aerosol model) to explore the regional and global effects of megacity
emissions on atmospheric composition and climate. Application of this model
to case studies of megacity plumes and long-range transport will provide
an improved understanding of the global impacts of megacity emissions on
ozone and other oxidants, and comparison with regional model studies will
allow a better assessment of uncertainty in the representation of export
processes and fast chemistry in global models, providing an important contribution
to WP5. The relatively high resolution of this global model will provide
additional insight by effectively bridging the gap between regional and global
model studies, allowing the impacts of model resolution to be quantified,
and providing an improved understanding of the effects of megacities over
continental and global scales.
Principal personnel involved
John Pyle, Prof., FRS, Director of CAS,
is the head of Physical Chemistry at the University of Cambridge. He has
more than 30 years experience in the development and application of models
of atmospheric chemistry and has worked extensively on stratospheric ozone
and on atmospheric chemistry-climate interactions. He has been coordinator
and PI on a large number of national and EU projects, most recently including
QUAAC, UKCA and SCOUT-O3.
Selected relevant publications
Oliver Wild, Dr., Res. Assoc., works at CAS; has extensive
experience over the past 15 years in the development and application of tropospheric
chemistry models to study the intercontinental transport of oxidants, the
evolution of tropospheric oxidation, the links between air quality and climate
change, and quantification of model uncertainty through detailed comparisons
between model results and atmospheric measurements. He has participated in
a number of international projects, including NARE, TRACE-P, ACCENT and HTAP
and has contributed to assessment reports by WMO and IPCC.
Maria Russo, Dr., Res. Assoc., works at CAS; responsible for
developing the high-resolution and mesoscale versions of the UKCA model,
and is involved in providing modelling support to a number of measurement
campaigns related to EU projects (ACTIVE, SCOUT-O3, AMMA).
Wild, O., M.J. Prather (2006): Global tropospheric
ozone modelling: Quantifying errors due to grid resolution, J. Geophys. Res.,
111, D11305, doi:10.1029/2005JD006605.
Zeng, G., J.A. Pyle (2005), Influence of El Nino Southern Oscillation on
stratosphere/troposphere exchange and the global tropospheric ozone budget,
Geophys. Res. Lett., 32, doi:10.1029/2004GL021353.
Wild. O., P. Pochanart, H. Akimoto (2004): Trans-Eurasian transport of ozone
and its precursors, J. Geophys. Res., 109, D11302, doi:10.1029/2003JD004501.
Wild, O., et al. (2004): CTM ozone simulations for spring 2001 over the Western
Pacific: Regional ozone production and its global impacts, J. Geophys. Res.,
109, D15S02, doi:10.1029/2003JD004041.
FP7 EC MEGAPOLI, 2008-2011